Set the alarm clock for 11:27 am

Leave this tab open — the alarm only rings while the tab stays open.

The alarm goes off in: ::

You can also try the other alarm clocks

Alarm clock for 11:25 am Alarm clock for 11:26 am Alarm clock for 11:28 am Alarm clock for 11:29 am

Going to bed for a 11:27 am alarm

Asleep by 2:12 am — 6 full sleep cycles, about 9 hours
Asleep by 3:42 am — 5 full sleep cycles, about 7 hours
Asleep by 5:12 am — 4 full sleep cycles, about 6 hours

A sleep cycle runs about 90 minutes, and most people take around 15 minutes to drop off. Waking at the end of a cycle feels easier than waking in the middle of one.

11:27 am across the country

London	11:27 am
Birmingham	11:27 am
Manchester	11:27 am
Glasgow	11:27 am
Belfast	11:27 am

Times are worked out live in your browser, so daylight saving is already accounted for.

How to use the online alarm clock

As you hand your current duties to a colleague before an NHS interview, set the alarm for 11:27 am so the changeover does not consume your preparation time. That leaves a clear point to stop discussing the shift, gather your notes and get settled before 12:00 pm, rather than repeatedly checking the clock while finishing the handover.

Your NHS interview reminder depends on this browser remaining open and your phone or computer staying awake; if either closes or sleeps, the alarm may make no sound. Keep the page visible while you complete the handover, check that the volume is audible and avoid switching to a setting that silences browser audio. A separate phone alarm is sensible if you expect to lock the screen or leave the computer.

Once the handover is complete, use the late-morning gap for a familiar light snack if you need one, such as toast, a banana or a plain biscuit. Keep water nearby, but avoid carrying a large mug into the interview area where it could spill over your notes. A full lunch can wait until after noon, leaving the minutes before 11:27 am free for preparation rather than finding food.

Common questions

Can I use this on a phone?

It works in a mobile browser, but phones lock the screen and suspend background tabs far more readily than a laptop does, which can stop the alarm sounding. For anything important, a desktop or a plugged-in laptop is the steadier option.

Does the alarm still work if I close the tab?

No. Everything runs inside this page, so closing the tab — or quitting the browser altogether — ends the countdown there and then. Leaving it open in the background is all it asks, and switching to another tab makes no difference.

What happens if my laptop goes to sleep before 11:27 am?

The tab sleeps along with it and the alarm will not sound on time, if at all. If you are relying on it, change the power settings so the machine stays awake, or keep a phone alarm running as well.

Do I need an account or an app?

Neither. Choose a time and a sound, press Start, and it runs in this browser tab. Nothing is downloaded, nothing is registered, and closing the page leaves nothing behind on the device.